Arrangement for controlling the mold width in a type casting machine



Filed Oct. 17, 1966 Aug. 19, 1969 J. SCH IDER' 6 ,0 5.

ARR GEM FOR ROI-I G THE MOLD TH A TY E CASTI MACHINE 2 Sheets-Sheet l INVENTOR Juldus $chnelldr Aug.19,1969 ;;H-EDER 3,462,005

ARRANGEM CONTROLLING MOLD WIDTH A TYPE CASTING MA NE 1 Filed Oct. 17,1966 .2 Sheets-Sheet. 2

INVENTUR JuZLus Schneider! United States Patent 3,462,005 ARRANGEMENT FOR CONTROLLING THE MOLD WIDTH IN A TYPE CASTING MACHINE Julius Schneider, Maximiliansplatz 9, Munich 2, Germany Filed Oct. 17, 1966, Ser. No. 587,045 Int. Cl. B41b 9/04, 9/10 US. Cl. 199-73 6 Claims ABSTRACT OF THE DISCLOSURE This invention relates to the casting or founding of individual type, and particularly to an arrangement for controlling the mold width in a type casting machine.

The invention is more specifically concerned with an improvement in a basically known type-casting and typesetting machine in which the mold has one normally open side which is closed by the inserted type face of a matrix during the injection of type metal into the mold cavity. The sequentially inserted type faces differ in width according to the character for which type is to be cast, and the mold has a wall which is moved transversely of the open mold side for varying the width of the type produced. Relatively complex devices have been employed heretofore for adjusting the width of the mold cavity to the necessary width of each type.

The object of the invention is the provision of a simple and foolproof arrangement for setting the width of the mold cavity as needed for the type to be cast.

In one of its basic aspects, the invention provides the movable side wall of the mold with a drive which includes a yielda-bly resilient linkage, and provides the several matrices with head faces of different widths and with abutment faces transverse of the respective head faces. The movable side wall of the mold engages the abutment face of the selected matrix outside the mold cavity in the casting position of the matrix.

The exact nature of this invention as well as other objects and advantages thereof will be readily apparent from consideration of the following specification relating to the annexed drawing in which:

FIG. 1 shows as much of an otherwise conventional type casting machine as is needed for an understanding of this invention, the view being in elevation and partly in section;

FIG. 1A shows a portion of the apparatus of FIG. 1 in plan view; and

FIGS. 2 to 7 show a portion of the apparatus of FIG. 1 in six sequential operating positions.

Referring now to the drawing in detail, there is shown the matrix-carrying selector wheel 1 of a type casting machine which is mounted on a shaft 2. A drive, not shown, connects the shaft 2 to a non-illustrated motor for radially aligning one of the several matrices circumferentially mounted on the wheel 1 with a locating plunger 1' and for moving the wheel 1 in the direction of alignment while its rotation is being stopped. Only three matrices 3, 3', 3" have been shown, but it will be appreciated that the entire circumference of the wheel 1 is occupied by 3,462,005 Patented Aug. 19, 1969 "ice equiangularly juxtaposed matrices. The structure described so far is conventional.

Each matrix 3, 3, 3" of the invention has a head face 3a which is directed downwardly when the matrix is aligned with the plunger 1'. The head faces 3a differ in circumferential width according to the characters which are engraved in the head faces 3a. Each head face 3a is circumferentially bounded by a recess X which is open in the axial and circumferential directions. The circumferential depth of the recess X and the position of the abutment face 3b which forms the bottom of the recess X determine the width of the individual head face 3a, the matrices being otherwise of identical shape and size and having each another abutment face 30.

The selected matrix when downwardly displaced with the wheel 1 into its casting position, can close the open top of a mold cavity (FIG. 1A) defined by two movable side walls 4, 10 in a groove of a stationary plate 8. The groove is bounded by opposite vertical faces 18, 18' and a horizontal face 28 of the plate 8, the face 28 forming the bottom of the groove. The side wall 4 slides in the groove on the face 28 in the plane of FIG. 1 inward and outward of the mold cavity 80 when a cam disc 5 is continuously rotated by its shaft 5'. A tappet or drive rod 7 projecting from the wall 4 is held in engagement with the cam face of the disc 5 by a compression spring 6 interposed between the side wall 4 and the stationary plate 8.

The rod 7 is horizontally slidable in the wall 4, and a cross pin 11 limits its movement relative to the wall 4. A helical compression spring 7' is interposed between the rod 7 and an internal surface of the wall 4 to urge the rod 7 outward of the wall 4.

The wall 10 is provided witha non-illustrated drive arrangement analogous to that of the wall 4 which moves the wall 10 on the face 28 of the plate 8 in a plane perpendicular to that of FIG. 1 in timed sequence with the movements of the wheel 1, plunger 1', and cam 5. The wall 10 is guided in a groove perpendicular to the direction of movement of the wall 4 and bounded by the face 28, another vertical face 38 of the plate -8, and by a backing rail 9 fixedly fastened to the plate 8.

Abutments 4', 10 on the walls 4, 10 outside the mold cavity 80 have opposite faces 14, 15 (FIG. 2) separated by the width of the open cavity side and by narrow shoulders 16, 17 on the respective walls 4, 10. The face 14 of the abutment 4' is perpendicular to the direction of movement of the wall 4, and the face 15 of the abutmerit 10' slopes obliquely in a direction inward of the mold cavity 80 and toward the abutment 4'.

The operation of the apparatus is illustrated in FIGS. 2 to 7 in which the wheel 1 and some associated structure have been omitted.

While the cam 5 moves clockwise from the position of FIG. 2 into that of FIG. 3, the machine drive which also rotates the shaft 5' moves the wheel 1 and the plunger 1' toward the mold. The conical end 1" of the plunger 1' is received in a conforming locating recess 3" of the aligned matrix 3', and the matrix 3' is moved downward until its head face engages the narrow shoulder 17 of the wall 10 between the abutments 4, 10. The matrix 3' isguided into precise alignment with the mold wall 10 by the oblique face 15 of the abutment 10'.

Further rotation of the cam 5 into the position of FIG. 4 causes the wall 4 to move toward the wall 10 until its abutment face 14 engages the abutment face 312 of the matrix 3', thereby pressing the face 3c of the matrix 3' against the abutment 10' and setting the desired width of-the mold cavity 80. The type metal is now injected into the mold in a known manner through a duct 12 in the base plate 8.

Upon solidification of the metal into a type L, the

mold is opened by withdrawal of the wall 4, as shown in FIG. 5, to permit the matrix 3 and the wall to be withdrawn from the type L. When the wall 4 is next moved inward of the mold cavity 80 by the cam 5, the type L is pushed into the path of the wall 10, as is seen in FIG. 6. The walls 4 and 10 are then returned to their original positions as shown in FIG. 7, and the return movement of the wall 10 causes the type L to be discharged from the typecasting machine toward a non-illustrated type setting device in a known manner.

It will be appreciated that the manner in which the individual matrices are selected by arresting the wheel 1 in a specific angular position, and the wheel 1 itself are not directly relevant to this invention. The wheel 1 may be replaced by a frame holding the several matrices in an equally known manner, and the movement of the matrices toward and away from their casting position may be acheived otherwise than by moving the matrix carrying wheel 1 in its entirety relative to the mold.

The spring 7 provides a yieldably resilient linkage between the drive rod 7 and the wall 4, and permits the wall 4 to perform movements of different length in response to movement of the rod 7 in a fixed path. The actual length of the mold-closing wall movement is determined by the depth of the recess X in the matrix which closes the normally open top side of the mold cavity 80.

What I claim is:

1. In a type casting machine, in combination:

(a) wall means defining a mold cavity (80) having an open side, said wall means including two spacedly opposite wall members (4,10) bounding said open side,

(1) each wall member having an abutment portion (4', 10) spacedly adjacent said open side outside said cavity,

(2) each abutment portion having a face (14, opposite the corresponding face of the other abutment portion and spaced from the open side of said cavity (80) to define with said open side a shoulder (16, 17) on the corresponding wall member (4, 10);

(b) a plurality of matrices (3), each matrix having a head face (3a) and two abutment faces (3b, 3c) transverse of said head face, said matrices differing in the widths of the respective head faces thereof between said abutment faces;

(c) selector means (1) for individually moving selected ones of said matrices toward and away from said wall means and a casting position adjacent said wall means in which the head face of the selected matrix abuttingly engages said shoulders and closes said open side of the cavity; and

(d) drive means (5, 6, 11) for moving one of said wall members (4) inward and outward of said cavity in the direction of said width of the head face of said matrix in the casting position thereof,

(1) said one wall member being moved by said drive means toward and away from a position in which said face (14) of the abutment portion (4) of said one wall member abuttingly engages one of the abutment faces (3b) of said matrix in the casting position, and the other abutment face (3c) of said matrix is pressed against said face (15) of the abutment portion (10") of the other wall member (10), whereby further movement of said one wall member (4) inward of said cavity is prevented,

(2)said drive means includieg a drive member (7), actuating means (5) for moving said drive member in a fixed path, and a yieldably resilient linkage (7) interposed between said drive member and said one wall member (4).

2. In a machine as set forth in claim 1, said face (15) of the abutment portion (10') of said other wall member (10) sloping obliquely toward said shoulder (17) of the other wall member and toward said one wall member (4).

3. In a machine as set forth in claim 2, backing means preventing movement of said other wall member away from said movable wall member.

4. In a machine as set forth in claim 3, said matrices being each formed with a recess, said one abutment face constituting the bottom of said recess, and said matrices varying in the depths of the respective recesses transverse of said bottom.

5. In a machine as set forth in claim 1, said actuating means including a cam member, moving means for moving said cam member, and resilient means urging said drive member into engagement with a face of said cam member, and said linkage including a spring member operatively interposed between said drive member and said movable wall member.

6. In a machine as set forth in claim 5, said cam member having an axis and said cam face being annular about said axis, respective portions of said cam face being offset from each other in a direction toward and away from said drive member.

References Cited UNITED STATES PATENTS 540,743 6/1895 Kemp l9973 883,425 3/1908 Rogers 199-92 X 944,108 12/1909 Sigurdsson 19973 2,070,184 2/1937 Schneider l9973 Re. 12,726 12/1907 Brown et al. l9984 ERNEST T. WRIGHT, JR., Primary Examiner U.S. Cl. X.R. 199-84, 92 

